I have also found below error in dmesg. [332884.028810] systemd-journald[6240]: Failed to parse kernel command line, ignoring: Cannot allocate memory [332885.054147] systemd-journald[6240]: Out of memory. [332894.844765] systemd[1]: systemd-journald.service: Main process exited, code=exited, status=1/FAILURE [332897.199736] systemd[1]: systemd-journald.service: Failed with result 'exit-code'. [332906.503076] systemd[1]: Failed to start Journal Service. [332937.909198] systemd[1]: ceph-crash.service: Main process exited, code=exited, status=1/FAILURE [332939.308341] systemd[1]: ceph-crash.service: Failed with result 'exit-code'. [332949.545907] systemd[1]: systemd-journald.service: Service has no hold-off time, scheduling restart. [332949.546631] systemd[1]: systemd-journald.service: Scheduled restart job, restart counter is at 7. [332949.546781] systemd[1]: Stopped Journal Service. [332949.566402] systemd[1]: Starting Journal Service... [332950.190332] systemd[1]: ceph-osd@1.service: Main process exited, code=killed, status=6/ABRT [332950.190477] systemd[1]: ceph-osd@1.service: Failed with result 'signal'. [332950.842297] systemd-journald[6249]: File /var/log/journal/8f2559099bf54865adc95e5340d04447/system.journal corrupted or uncleanly shut down, renaming and replacing. [332951.019531] systemd[1]: Started Journal Service. On Tue, Sep 10, 2019 at 3:04 PM Amudhan P <amudhan83@gmail.com> wrote:
Hi,
I am using ceph version 13.2.6 (mimic) on test setup trying with cephfs.
My current setup: 3 nodes, 1 node contain two bricks and other 2 nodes contain single brick each.
Volume is a 3 replica, I am trying to simulate node failure.
I powered down one host and started getting msg in other systems when running any command "-bash: fork: Cannot allocate memory" and system not responding to commands.
what could be the reason for this? at this stage, I could able to read some of the data stored in the volume and some just waiting for IO.
output from "sudo ceph -s" cluster: id: 7c138e13-7b98-4309-b591-d4091a1742b4 health: HEALTH_WARN 1 osds down 2 hosts (3 osds) down Degraded data redundancy: 5313488/7970232 objects degraded (66.667%), 64 pgs degraded
services: mon: 1 daemons, quorum mon01 mgr: mon01(active) mds: cephfs-tst-1/1/1 up {0=mon01=up:active} osd: 4 osds: 1 up, 2 in
data: pools: 2 pools, 64 pgs objects: 2.66 M objects, 206 GiB usage: 421 GiB used, 3.2 TiB / 3.6 TiB avail pgs: 5313488/7970232 objects degraded (66.667%) 64 active+undersized+degraded
io: client: 79 MiB/s rd, 24 op/s rd, 0 op/s wr
output from : sudo ceph osd df ID CLASS WEIGHT REWEIGHT SIZE USE AVAIL %USE VAR PGS 0 hdd 1.81940 0 0 B 0 B 0 B 0 0 0 3 hdd 1.81940 0 0 B 0 B 0 B 0 0 0 1 hdd 1.81940 1.00000 1.8 TiB 211 GiB 1.6 TiB 11.34 1.00 0 2 hdd 1.81940 1.00000 1.8 TiB 210 GiB 1.6 TiB 11.28 1.00 64 TOTAL 3.6 TiB 421 GiB 3.2 TiB 11.31 MIN/MAX VAR: 1.00/1.00 STDDEV: 0.03
regards Amudhan